Crushing, grinding, or pulverizing machinery.



e. H. FRASER. CRUSHING, GRINDING, OR PULVERIZING MACHINERY. APPLICATION FILED JUNE 20. 1905- RENEWED FEB. H, 1 916- Patented Nov. 21; 1916.

1 3 SHhETS-SHEET1.

'WITNESSES: 55v

M 4/ 1 Wm? G. H. FRASER.

CRUSH'ING, GRINDING, 0R PULVERIZING MACHINERY.

APPUCATIOH FXLED JUNE 20. I905. RENEWED FEB. 11.1916.

1 ,205,61 3. Patented Nov. 21, 1916.-

I3 SHEETSSHEET 2.

l 7 T INVENTOR:

WITNESSES:

G. H. FRASER.

crwsums, GRlNDiNG, 0R PULVEHIZING mcmmv; APFLICATIQN FlLED JUNE 20 $905- HENEWED FEB- ]1 1916. 1,205,611 3. Patented Nov. 21, 1916.

I3 SHEETS-SHEET 3.

. -iNVENTOR: WlTNESSES: 7,9114% G. H. FRASER CRUSHING, GRINDING, OR PULVERIZING MACHINERY.

- APPLICATION man JUNE-20 1905. RENEWED FEB. 1!,1916.

1 205,6 1 3. Patented Nov. 21; 1916.

I3 SHEETS-SHEET 4- INVENTOR:

SVZLFZNESBES: 7 By A! mug 5,

Patented Nov. 21, 1916.

13 SHEETS-SHEET 5.

INVENTORI WITNESSES: 74a WZM WITNESSES: 1%?

G. H. FRASER.

CRUSHING, GRINDING, OR PULVERIZING MACHINERY.

APPLICATION FILED JUNE 20. was. RENEWED FEB. n. 1916.

1,205,613. Patented Nov. 21,1916.

I3 SHEET SSHEET 6.

INVENTORZ ai-mw G. HJFRASER. CRUSHING, enmnmmm PULVERIZINGMACHI-NERY. APPLICATION FILED JUNE 20. I905- RENEWED FEB. 11. l91 6.

1 ,205 6 1 3 Patented Nov. 21, 1916.

I3 $HEETS-SHEET 7.

Fig. A.

INVE NTOR:

WITNESSES: 4

' G. H. FRASER.

' CRUSHiNG, GRINDING, 0R PULVERIZING MACHINERY.

APPLI CATION FILED JUNE 20.1905. RENEWED FEB. H, IBIS.

1 ,205,61 I Patented NOV. 21, 1916.

lzyzz. W-

63 v' 1. 74 .14. I 4 En v gannmmm INVENTOR:

W TNESSES:

G. H. FRASER. I CRUSHING,'GRIND ING, 0R PULVERIZING MACHINERY. I APPLICATION FILED JUNE 20. 905- RENEWED FEB. 1h

nnw 1- 9 1 1 2% mm Nm m t H .6 L a P Q INVENTOR:

Jimm

G. H FRASER. CRUSHING, GRINDING, 0R PULVERIZING MACHINERY. APPLICATION man m 20.1905. RENEWED ma. n, i916."

Patented Nov. 21, 1916.

1 3 SHEETSSHEET IO.

. WlT NESSES: I v

G. H. FRASER. CRUSHING, GRlNDING, 0R PULVERIZING MACHINERY. APPLICATION FILED sun: 20. 1905. RENEWED FEB. 11,1916.

1,205,613. Patented Nov. 21, 1916.

\ i3 SHEETS-SHEET II- INVENTOR:

WITNESSES-r M B Azzfome s, V

\ i I A OI'IM'S,

a. FRASER. 'cnusumc, eamome, on PULVERIZ' ING MACIIINERY. APPLICATION FILED JUNE 20. 190 5. RENEWED FEB. H. l9l6.

1,205,613. PatentedNov; 21, 1916.

I3 SHEETS-SHEET l2.

jay. 41.

lNVE NTOR:

G- H. FRASER.

CRUSHING, GFHNDING, 0R PULVERIZING MACHINERY.

APPLICATION FILED JUNE 20. 1905- RENEWED FEB. H. 1916 Patented Nov. '21, 1916 13 SHEETS-SHEET I3- INVENTOR:

\LVZLNESSES: 60910 Z15 %m ri al' between; therol fproride an, improved -eral type. I

'lt-rt-hls r proved llIG-dllH for UNITED TAT S ATEnT OFF-ICE.

GEOZRGE I71. nnsnn, or mw CRUSHING', GRINDING;

' '1 .Z O SIHBQ" v Appliction filed June 20. 1905. Se1jia1 No.'26 6.-156..

I]. {'u'l lulu/in if nmg gro'ur'k-rn:

3r; it knownthat,LyGnongn: H. FRASER, a uitizenof theITn-ited Stat e5, residing in the liooough 0f Brooklyn. count of Kings city and State-of New York, hare in 'entedx'ertain new and useful Improrementg in? Crusl-riu'g. '(ir-inding.- or Pulrerizing i Machinery. r. otarhich the "following isa sipet'ifieation. This inrpntionrelates to lnarhinery for rrushing. grinding or pulrerizing' materials. such for ekample as lnaehinestm' this work having-a .lL\-'0l\lDI annular di'e and one or more:internal (rushingrolh=- hearing against theini ier t arr o'fi the (lie tocrush-theinate-' l and die faces. -.;'.l-'heinvent-ion.ain'is to p ro .'id e vario s in .PFUYlllfilltS in 'rrushin'g.inac-hinery, and t nn u-hine of. this genid in r-arr 'tin'g out: this in\' e1,ition in its-preteured form,improved mean-gs are provided f'or carry ng-the wolf-shafts". nn-

' pro-red-,means for supporting the roll hearv aim.

tings. an improved 7 casingeonstructionl .and

\ta rio1.1$'.other improyeinents all of wh ch will,heherelnaitermorel e .v. ,rlrawings .wlnch illustrate'the. preferrecli tornl of my intenlion-n5 appliedto a pulrerizing lnillof the ,Figta-l: Fig; 2 a front now-arm thereof:- 'nlW.

lookingin the ilii-ertiongjof the arrow: Fig.

to Fiji; "1 .showinglit-and the other parts of .theInlarhlne partlrm sectron; on the planes of th j hnes -:l.3, 1n Fig; 2: Fig. .4 IS a rear tlie .planeof the -lilu. I-l1-l in F gs. 1 and. 3 lookingin; the ion "of the; arrow: Fig, 5 r planview "partla'fliu horizontal 'Sertion Qll'illl planes of ?).5 inFiggs. 1 and 3-; Fig. (3 is a sideelevation of the casing! partly in .-\"erti'- an mltsidejelei'a- Fig. l'l'i-jsan'outside elevashowing the rear roll fasteningq' Fi IYJL'SY of rinefrace thereof: 32' 15 roll ias eningz:

-' ear hj l espectiye'ly plan and j detail portion of the device justed: ln -the vspriinzs means; as' for enan iple- YORK, H. Y.

nemwea'iz'ebrua 11,1915; Serial No. 77,798. tionofone of the sideguiclebarsjFig 12 1s a .view of one end 'thereof; 'F1g. 13' isa new ofthe other end thereof; Fig. 14: 1s an edge View thereof: 15 is Lin inside view of one' of the spring plates. alone; Fi' gm116'is.- an: edge ri ewthereof: Fig. .l'ifis 'anf'outside elevation thereoiiligr is a cross-Section thereof: Fig. 19 an 'outsiclejele ation of one of the feed chutes'alonet Fig. '20-'i5 a -.irontelei'atlon thereof: lfrg'. :21 is an inside Patented Soy. a

al' l;:ll-llI( 1ltiU'\', Section showing the feed roll; fastening: l1 1g. is a' friew ofone face tl1ereorFiL '39 1151a rieu' of the other facethereof: Figi'. 3U a iragmentary 'ection of the other fare thereof-z Fig 33 is inentary view of a modified. -611. fat'en'ingz Fig; I

another :iioditi'ed If-Will Sjertion of one of thehearin slio wingftlie dnst-exrlmling thrust rollars: Fig. 3? is a v rrtion tliere fon tlieline zlT i iTrFig. is a rr iss'-:-terti in thereof on the," line ss+: -aa;.r1 39 is an enlarged trz'rg'inbntanv sectionthereof: l' i gznlll' is a side Ieleration of.a-moditiration: -l1' Ia frmiflelevzu tion thereof; and Fig. l) isii "prrspecqtive view of the ras'ngi. alone.

looking at its remf'edge and let flClGvl-Q b 1nd. 1"" side. news of a Referring to'the dra\\'in;s A is thefcasin}; 'B is the P1112101 he; and C"- are the rolls, S. S and are the prushi'n'g s 'n-ingrxanrl r]; 17 and I?" are-the 'adfilstin'g {Hie-casing inelosea and supports the ringand roll The .top roll preferahly Carries the ringiln' zu-ting against its inner taoe, and

The ring; and rolls-are driven by the; roe]:-

roe

F on the top shaft D, which causes the roll C to revolve on its axis and tlrive the ring B by traction from the roll.

(at is the hopper, and Gand (l are the feed chutes.

Rock enters the lioppe and falls throu h the chutes at the opposite sides of the null on to the inner face of the ring in front of the feed roll C. The rock revolves with the ring and 15asses the rolls. by which it is crushed against the face of the ring. The

crushed rock flows off the sides'of the ring and falls out through a discharge opening a in the bottom of the casing. 'llie rin runs sulficiently fast to cause the rock to stay on its inner face under the influence of centrifugal force until the rock is pulverized and forced oil this face by the rolls. The inner face of the ring is concave, and the outer face of each-roll is convex, so that the ring is guided by the rolls and tracks on them like a belt on a pulley. The rock on the inner face of the ring causes the rolls to move in and ourae'ainst the tensionof the springs. The ring: preferably is free 'to move axiall a short distance, but is prevented from excessive movement by checkpieces ll'll at its opposiie sides. the space between then: and the ring being sullieicnt to Jermit the crushed rock to esca )e. and hem"- i l" small enough to falling through.

According to one feature of improvement- 1' construct the casing A as a ring-like or tubular member open at its front and real edges. and preferably also at one or both sides, such openings being preferably of larger diameter than the outer dianu-ter of the ring, so that the latter'ran'bc removed or inserted through the front or rear openings. aml it and the rolls can be removed or inserted through either of thc siilc openings. Preferably the casing' is (anistrurtrd as a prevent large pieces from I single annular casting. pa rtl v of trough-lilo:

cross-station and partly of L-shapcd crossscction. aid having all internal crushing chamber I. tili('.l\' side llangzcs 1.- connectcd at the top b a crossnvall r and at the bottom by r|-oss\valls f at front aml rear. and b the base 1 through which the outlet opening 1/ rinnmuniciitcs with the chamber I). trout hole It (see Figs. ll. '12-: and 42) of ,Q'rcaterheight and width than the ring i3 is provided through the front wall of the easing a similar hole It is provided through the learn-all, aml circular holes Ii. b. are provided through the-side walls, so that when necessary to remove or replace it the ring may he passed through any ofthese holes, which will be afterward closed h v suitable plates H1 r ers. -.-\t its front the top wall r is ancl H at e to carry the feed hopper and --:s rear it is formed with one or n.=-re lites or projections i for supportiim' or guiding the. hearing frame of the top roll. Xear the base the casing is provided with one or more integral lugs i at front and rear for supporting or guiding the bearing frames of the lower roll. on each side the casing is reinforced lrv a lateral flange j. which is preferably interru )ted near the top and bottom beyond the extremities of the front and rear holes, and which serves to strengthen theirasing between its solid top wall and its face throughout the portion traversed b v" these holes. This [lane-e is arc-shaped andpreferably eoncen trio with the axis of the casing.

To close the lower parts ofthe end holes 11-. a plate Is is providedivhieh is'|u'el'erabl v a removable sprint plate for taking the pressure of the roll springs. and extends from the center of the casing down to the end of the hole. The npperpart of the hole is preferably closed by a sheet-iron plate l, which is bolted to the top of the spring plate and extends thence upwardly and is bolted to the top wall r. the front of which is faced oli' to make a tight .joint with it. Preferablv the outer face of the llane'e j is turned off true, and the innenfz'ice of each plate I.- is machined to knalv'e-a tight joint. and to facilitate this the flange is projected ontn'ardlv snllicientlv to permit a boring maclone tool to finish its face. aml is of such radius that such tool' uiill lear the other projecting: parts of thecasingivhen cutting this face. The logs r' i. are sullieienlly separated from the ilangej toprovide for this.

The sides of the. casing: are provided with a circular smooth face an. adjacent to and surrounding! the side openings. and are. |H'cfel' ably bored with an outer shoulder a at the outer edge of the side openings against which the side covers may be (dumped.

The ring 15 is of improved construction in that it has outwardly inclined or diverging conical side faces I) at itsopposile sides extending outwardly from its concave inner face ,1. and preferably n-rmi11atin; at inwardly inrlined or reverse conical faces 1 extending from tberfaces o o]it\\'a|dl y to the outer wall r of the ring. 0 reinforce the edges ot'pllie' ring and pre- '.\u improved clmek-i'iiere.ll' is provided The llarine faces opposite the sides of the ring. 'These pieces H are |-)rcfr|al|l rightand.lcl't liand. and ha e vonhul contact faces a substantially identical in their outward iprlinatimi will: and parallel to the outer liz'iring 'laces u of the ring] These faces are preferably hardened and are disposed opposite'the riug. the

chcelepieres being preferably formed each as 'a single dish-like or circular member or casting having 'a wide laalyfportion exleni ling ont\vardl through the adjarent side hole in the casing. and having an outer llange t turned off to lit against the fare 'lfb of the casing. and an adjacentshoulder u fitting the its miter edge it, is-fft'irx nietl' boredshoulder n of the casing (see Figs. 4.,

9 and 10). T he body 1: of each'cheek-pi'c'- is prefeyahly a soft casting, cup-shaped on i'n'sut'e' thht the cheek-piedeba'n' Only-be a'p plied'f tt r th'e easihg inf proper *p'qsitjo'n'. 5 These"- prbxisl'm'xsate preferahly notches 1 nthe ."ch'eizk p'lee'e, and Inge formed onthe,

inhez' fziiies'of thelflanges the notch and 111g being shownas are-shaped and. asvnupjeetion vhich- I'is similarly "shay'ieth" Be.-

mien-t the eheek yhece constitutes the side'- coteringnfthe easing for \thich purpbse it l's-formed \\j' which elose 571 to Peri flit eseap'.

form with *21 cunt-ave"'outcx tube, unklwvith hole, mind through "which the feed chute discharges, and \\-'.-ivth a n outer flange f! surrmurding'.this hole}, and] finished. hfitu-nmke 1i tight' joint mater n de the cheek piece is formed with anm alidly; 'pro ectn'ng "fi uge v 0r5 POPUOIIIQ (f .1

' u lding the "feed ":bpenin'g mwa'rdly' a1: guiding,

of the f'eed mljh'an d prefer to vuse the spnt I. and extendswxeross tothe opening in the mfe' of. the-sl'n lfts; il lltl also 5 mutant 'm i 0'1 helim'itzthe' ends .tgythe 0 that they &

at our end and to the frame at the other end respectively. and which, as shown, swing on their pivotal connections participating in the movements of the frame radially. hutiresist tendency of the frame to rock laterally. The supports or members N are preferably U-shaped castings fitting between and hinged to the adjacent lugs '1', z" and respectively on the casing. and having a tubular renter f which is bored to coincide with the bore 1/ through an attaching lug on the casing. and to fit a pivotal pin i" for connecting the parts together. From the center two arms j" project outwardl and have drilled ends which are fuh-rumed to the adjacent end of the frame K, preferably by being fastened between :1 lug cast on the latter and the'adj'acentspring pocket, h a pin 1'. there being Jillicient clearance between these to permit a cotter-pin m to be passed through the pin Z to hold itin place. This connection in sures that the bearing frame shall move in parallelism with the axis of the casing. and for the lower frames the angle of the pivotal connection is preferably such that the weight of the frame tends to force it out avardl), thus adding this tendency to the effective power of the spring when the. latter is used. or making it possible to use the weight of the frame alone for generating the crushing force. The action of the members X for the lower rolls is similar to a t-oggle'action. and its effect depends on the relative angularitv of the pivotal connection'whieh is adopted.

According to another feature of improve ment the top frame is formed with integral wells (l adjacent to each bearing for lubricating it. As shown, these wells are formed by casting against the web of the frame. side walls 111" .a front wall F. an iptermediate partition and an overhanging flange 1' lhe opening through the front. wall is closed by a cover l. which closes both wells and is hinged to the side walls beneath the flange r; and has wings a" near its ends which preferably pass into the wells to keep dust, from floating in at the ends of the cover when it isopcncd. The cover is surrounded by felt to. make a tight closure. Grease. can be put in one side of the partition. and oil in the other side, and each will feed down through the communicating hole to near the center bearing.

According to another feature of improve ment the lower bearings are provided with oil .wells 0 which are cast integrally with the caps and closed by covers P. These wells have an upwardly curved bottom wall a and an upwardly reverse curved top wall 71, which wells are connected by the side walls 1" and shaped to give a suitable depth and contour to the oil wells with in them to properh hold lubricant therein. The opening at the front of the wells is on an angleand the cover P rests on this by gravity. being hinged near its upper edge by a bolt so that it can be tilted to open the wells. These wells are partitioned by an intermediate wall q to make the necessary number of compartments. side flanges s which embrace the side walls to prevent dust from floating in at the ends of the cover. The cover is round at its upper edge and overlaps the upper wall to prevent dirt from sifting in at the top, and the cover is wrapped with felt as described for the cover 1. The bolt F'which hinges the cover I. has one of the several bolts bearipg this latter which are used to carry the dust guards J from'the bearings.

The feed hopper consists of a casting having a receiving chamber 15 above its gate HF. bifurcated legs v below these, and a flange 3 which is planed on its under face to rest on the top 6" of the casing, and projects over this face and the top of the feedehutes, which latter itsupports by bolts passing through this flange and the finished top flange of the chutes, thus suspending the latter from the hopper.

' The feed chutes are tubular castings of .curved or angular formation. which extend outwardl from the feed hopper far enough to clear the guide bars-ill and then downwardly, and then inwardly through the adjacent cheek-piece atthe proper angle to discharge the feed on to the inner face of the. ring above the feed roll. The upper portion a. of each chute preferably corresponds in angularit with the adjacent leg of the hopper. Beneath this the chute descends vertically and has a front opening b The cover has which is closed by a hand plate, below which the chute has an angular tubular portion leadmgmto the null. A feed chute'caii be removed andamither one substituted in case of wear. I

When the improved Haring ring is used? it is desirahlc to limit the motion of the ring to a predetermined extent in order to avoid unnecessary contact with the cheekthe ring without danger of bindin this reason I prov'nle means for hunting tion shown to confine the pressure springs S within .predetermined'but adjustable limits i of expansion, while leaving them'free. for

additional contprtiSSiotnnItd then to set the pieces, and permit the latter .to be close to For pressure screwsagainst" them. so that the rolls will be-proprl-Y disposed under't'heir tension which collar is held toward the casing by an ad ustable bolt- R and is freeto more inwzudly aldng thisrbolt undens'hit"h the spring washer Tbears; so that the-reaction of the sp'rlng agamstthe Washer -1s efiectu e until the spring expands sufiiciently t6 bring its compression plate. against the head e't' the bolt, whereupon its en ansion' is ar} rested, and" tendeney to more the bearing" frame "furthereutunrdly e'eusesi' This 7 J ustm'ent' should be made so that the QPEL'CUYG netmn 0t thespring-will cease betore the ring quite- 'contucts u'ithfthe eheek-pieees ut thep'oint dii'uuetriculh opposite eireh spring. The opposite movement of the frame to ward the causing me)" be limited by 50 mpurtioning the parts that the s'prin-g'uasher \vill'strike-the head otthe belt-R and arrest inu-urd movement of the frame, or thzttthe springs u"ill entirely collapse and prevent sue-h nim'ementor by providing uthersuituble'stops or pi-ofisions giving the requi-fj site lostnwtion, but adapted to prevent an undue excess of motion in me or both di-j rections. The spring stop which the frame moves-lnu'ardly against arrests t yleldnigly te limit inu urd motion iuthe construction ment-undue siile' not-ign 'ot the ring zcessi elnoi'eluent pf the ri ngQ zind-the C. Qn.

screw on thi ring imu v; beelt'eeted in g n suitable we)",

t Ifprefer to term*thermg \Yltl l a' trimsthis,'- intdui'hicl niis which the rpll'er 1s greater in size than the shaft slots to keep- I 'n'efer t0 'd0 this l y'chim'ping the springs with u compression collar Q.

'which the keys puss and the small end the keys are scre-\ tl1readedand, .ezlehcz the transverse phineiof,

t'rmn unscrewing, libltsit center. and the edge of each the latter closed during ordinary tnbi'emnts"f of the betuings. iTllP}? ere supported fi'bm their respective l'ieurings hy the 'b 'olts' '1" ivhiehure pressed tow-(1rd them-lg" ring v Z which ,force the ends of tlie .b01ts into the holes-in the dust guards. ()n the'cups t'pi 'fj the t'0p' benring, lugs A are especially cust' t0 cnrry'the bolt f, and On the frames il f l similar lug m is cust these lugs being din" metrically opposite iind ,equid'istuiit. f 61151 the uxis oft-he bearing, oth'ut'they terrespond in relation to the d st guurd-uith thf pirotnl bolt for the lower uiljvellru'p's Pd, thus permitting the dust g'u-h'ds tp" l)e -ul l ulike.' I lz'o more tightly press; th't dust g'uurds uguthst the rover 01 t'heekipj I i I v I side plates 1/. which ure flpr side of" the dust guards by spring, I lied by |.10l ts screwin into' the iem The. lip. m f the eover is formed With-p re 'je'eting portions 4 :ug'uinst \\il"'h .t h fe' pressiu-e p h1te 'I./l seat. Holes 3/ aredrilled j t'hrmi'gh the dust guards, and the ends of the: bolts 'ZQer'iter theselitiles'f0rfstiiibbrtihg.

the dust guards and transmitting t 't-h 'e'l'n the movements o't' the bearing. I

4 -Aec'0rding to other inuirovelnents'l ill' differently consti' ueted in the:- merit. to the shafts. .The t o'p. rollC li ndricul bore (1* kind the. she t't' u dcvlirie 'ent' pit s tightly together .and; pffent'iqg 'lhe slnijft has it projecting. flange) collar, and passing tlIl'Ql lgh transverse ch21. nels j in the"i nner fuceut' the'roll. hold the eolhtr h" in place u nd drnw uflfillttl'lf to; cl. the opposite faee bf the roll. lIThe' -ollz a has tapered faces m? engaging th llCls' f-tllgfk for holding-them 'itplae'e;

erzibly 'ztsegmefi'tof er'peripliery being col'ieenticente "the nieehme"slidwn T he} feed will C is that, requiringmost frequent --rene-\\'u l, and is preferably rah-s v structed as shown in-l igs. 21.16% and :23). L30

Its shaft I) has a tapering seat 71", terminating in a flange f". and the roll has a tapering horn rr" fitting the seatand meeting the flange. Nea r its center the roll has a cavity c" from which toward its other side it has an outwardly flaring or reverse tapered bore rl". A split cone 1' having an inner taper fitting the shalt and an outer taper litting the horn (/"j. is tot-ed into the large end of the roll h) transverse holts i" which traverse channels j" in the roll and pass throughthe tlantre f".

The rear roll 0- which needs to he renewed less frequentl) than the others. is con; structed as shown in Figs. Ill). 31 and 32, where the shaft is of uniform diameter up ti its central flange f". and the roll has out wardl flaring hores u I," and an intermediate shoulder c which lits against the flange f. A split collar 1/" having a c vlindrical inner hore and a tapered outer hore. is forced in one side of the roll. and a similar collar 1* of smaller outer diameter is forced in the other side ol the roll. llolts 1 traversing hoth collars and the flange f". draw the rollars home. and bolts i4" traversing the flan e and the collars c draw the latter home. lhe latter holts tend to hold the slioulder c of the roll against the flange f of the shaft, thus holding the roll in its central position. The cone 1/" has'socltets i". for the heads of the bolts It" to prevent rotation of the latter.

in each of these constructions it will he noted that the method of attachment tends to hold the roll agninstthe flange on the shaft, so that the roll will occupy fixed position longitudinally of the shaft: also that each (Ulll-SlllllttlOll tends to insure that the roll shall he con entric with the axis of the. shaft.

Another feature of improvement relates to positioning: the rolls axially relatively to the. non-rotative parts, and preferably provides r'or movahly, yieldingly and elastically. axially holding each roll, and means therefor preferably also serving as the thrust collars and dust protectors for the hearings. which means are preferably constructed as illustrated in l igs'ltl, 3T, 38 and ill). Preferably two thrust collars are used, one, X, at the inside of each hearing, and the other, Y, at the outside of each hearing, and each is spared apart, from the hearing so that the shaft can move axially of the hearing, and springs reacting against these. collars and the hearing resist such niovelncnt. as best. seen in Fig. 3h. .The shaft is formed with a shoulder n. beyond the hearinn. and a reduced portion If within the hearing. and a groove at the outer end of the healing, and the. outer faces of the hearing are surrounded by a projecting planed portion (F, outwardly of which is an annular yielding packing 1" seated in a socket cast in the end of the hearin The collar X is bored to tit over the shaft and against the shoulder a, and is split partway through adjacentto this shoulde and clamped on the shaft by a bolt the head of which is prevented from turning by a shoulder on theeollar. The collar has a projecting flange h over which tits the flange of a ring 2" which bears against the end of the hearing, making a running joint therewith. and a tight joint against the elastic packing a, as shown in Fi ..36. The edge-of the ring is heveleth an it has a progecting flange which fits slidingly over the flange h. The ring is hored to tit the shaft, and its inner face is opp site the inner edge j of the col-. lar X. loclzets l. are formed in the collar X, and lugs l are cast on the rin and project into these pockets. and springs m he tween the collar and ring within these pockets and between the lugs, tend to force the ring: toward the hearing see Figs. 3t: and 2-57. The collar is fixed relatively to the roll and is spared from the hearing and has a slight pla v relatively to the ring. so that the shaft can have the desired end play, the springs keeping the ring always against the hearing as the collar slides-in the ring. .The lugs on the ring cause it to revolve with the collar. Thus the end of the hearing is always kept closed against ingress of dust and the collar and parts carrying it are always subject to the reaction of the springs.

Althou h the collar is tilled \vith' heav grease he ore the parts are assembled. which ractically seals the joints between the parts. I prefer to use an additional packing Z (see Fig. 3% in the nature of a cupped leather packing. which consists of a piece of leather or ill)?! wired into a groove surrolnnling the collar at such a point thatthe flange of the ring will overlap it, and that it will act to prevent ingress in case of suction when the parts are separated.

'l'hethrust collar Y is similar to the thrust collar X, except that it is constructed in halves which are. holted together to permit its being seated in the groove. In this case the log on the ring is a solid lug. In other respects the parts are substantially identical in construction and operation ex'cept'lhat the direction of the reaction of the springs against the collar Y is opposite to that of those against the collar X to hala'nce the eli'eetive forceswhen norn1all positioned.

In both collars the bolts are prevented. from unscrewing hy the pro'eetion 1 whiel' engages the not on the ho t, and the pm jeetion 0 which engages the cotter 1F tray' ersing the 'holt, thus preventing hoth tl're nut and the eotter -from rotating.

In use, the ring, in assembling the uniehine will he put in'the mill through one side or the other, or the ring through one end or the other and the rolls-and their.

shafts through the side, the cheelt p'ie'ces will be fastened in place, the covers applied, the

"pressure plates will be attached. the frames with their pressure springs applied, the bearing caps drawn ho'me against the frames to secure the shafts in their bearings. the guide plates attached in position, the guide links N connected, the feed chutes and hop- 33 and 34, in which the shaft has a'central' per applied, and the mill adjusted ready for running. To remove a cheek-piece or any of the internal parts, the roll shafts will -he disconnected from their bearings, links X will he uncoupled from the frames K and these frames will be'm'oved -l)aclc until the" faces oftheir hearing ends clear the attached rangement, combination or use hereinbefore set iorthas constltuting its preferred form,

since it can be employed in whole or in part according to such 'modlficat on's as clrcumstances or the udgment of those skllledin the art may dictate, without departure from the spirit. of the invention.

One such modification is sho'wn in Figs.

enlargement a, and the roll lettered C is cylindric'ally bored and seats against 'a shoul- '-'de1 b on. one side, theshaft on the. other side ;of the roll being formed] avith a groove a terminating in a shoulder (Z between which. and the roll are looking blocks e" which-are held in position by a tapered-collar i which embraces them and is' held toward thee-0111,1036 bolts g traveisingthe roll and engaging a collar h surrounding the shaftnt the outer'sidelof the shoulder b Another modification is shown in Fig.35, inwhichth shaft is for-med w-ith'a groove at the side -of the'.1-oll having :a beveled shouldero, and asplitcol-lar b is clamped in this-groove and-has a beveled face engag ing the shoulder and-held thereby toward the side-.ofi-the roll toIpi-e vent, displacement of the-latter, and hold. it a'gainst. the shoulderc" atthe other side of the roll seat. .A notl1er modification is shown-in FlgSJlO and. 4,1, in Whichgthe hearingz franies K are. guided against rocking longitudinally. of the shafts hy-rollers 1a which are bolted 'to'the sidesiof the f;1'am es,',either at fixed, points-or a yieldin'gly connected parts, to gn e the frames aslightghdxplay n case it is desired to omit, the end} pl ay; 'roxn the. thrust colla rs, The rollers a" bearaga-inst' finished ROIlilOllS or ninet en the sides of' the cas ng A,

or its covers or check-pieces Z}, which will preferably be flush with the lips surround-"1 mg the'shaft' slots, and machined to a definite distance relatively to the ce'nter'of the casing.

tically by rollers'c which arepivotally I In this construction the hearing ends'oi the lower frames are supported vermounted on the side walls of the casin' or the cover or check-piece Z thereof, an; the outer part of the top frame is supported at both :sides by rollers (P at front andrea'r of its edges, which are formed with planed tracks or hearing portions for thesefrolh ers. The rollers d are mounted on the easing or outward projections therefrom,"andj have flanges f which" ojeaman-(Hype the portions e and prevent lateral sway 'of the'outer portions of the top framefThe hearing portionot the'top frame is united by a link X which straddles the casi'ng'an'd is pivoted to a. projection g on the outer wall thereof, which insures equal vertical movement of" the opposite bearings. The lower fraines'are pivoted near their-outer parts to Ll-shaped links N and N re'sp'ectively, whichare fulcruine'd the one to a hollow projection h on the base, and-the other to a flange 2' on the base, tl'1se'-linlts insuring parallel motion of the lower bearings respectiyely; In thisfway proper freedol'nof movement 15 obtained with very few parts, and great simplicity. of construction, and without sacrificing the parallelism'of" the shafts, which isdeSI'rahle to this cha-racf ter of machine;

' \Vhat I claim is 1; The combination with. arevolring annula-rdie, a crushing roll therein, a casi g inclosing saidparts-and a movable hearing for said" roll, and meansimovabl-y support mg said bearing, of a guide for Sll'ld hearing disposed between the inner face'of the latter and said casing and attached at its end-to said oasing'andcrossin'g said bearing;

2. The combination with revolving annular .die', a crushing roll-therein, a casing inclosing said parts, andnnovable bearings for said roll zit-opposite sides of said; casing,"

and meansinovably supportmg s'aid. ';bear.-

ings, of .a member attached-lo.'saidacasingrfor guiding said hearings. extending between i the Inner face of-the latter and said roll :for--f- 1 limiting inward movement; of said; bearings. ,a-xiallyof said roll.

3. In-conrhi ation, an-annular revolvingcrushing 'die' having .an internal crushing--- face, a. i -otatable and axially-movable crush-s.

it so;

ing rolhirithin and eccentric to said dieh'av' ing asperipheral' crushing-face reciprocal to; v the inner face of the latter, means forte-, olving one of said parts, a casin for said. p'arts,,.a non -rotative me1nber ..rero ubly car rying said roll, and meansyleldmgly 'posi tioning said roll axially relatively to said non-.rotati ve member;

"'4. In combination',' a

revolving nnularl fio 

